â¢ 3000 BC Sumerians use asphalt as an adhesive; Eqyptians use pitch to grease. chariot wheels; Mesopotamians use bitumen to seal boats. â¢ 600 BC Confucius writes about drilling a 100â gas well and using bamboo for pipes. â¢ 1500 AD Chinese dig oil wells >2000â deep. â¢ 1847 First ârock oilâ refinery in England. â¢ 1849 Canada distills kerosene from crude oil.
Donating Blood. Who Can Donate? Anyone who is in good health, is at least 18 years old (persons 16 or 17 years old may donate with a Blood Program permission slip signed by a parent or guardian), and weighs at least 114 pounds may donate blood every 56 days.
Physically small people are not acceptable as blood donors as they have lower blood volumes and may not be able to safely lose a full pint of blood. One may not donate blood while one has the flu. But one can donate blood after exposure to someone with the flu provided the potential donor feels and has no symptoms. A minimum age limit exists as to how old a person must be in order to donate blood (usually age 17). There is no maximum age limit. Pregnancy and recent childbirth rule one out as a blood donor.